Nicodemou, who plays Summer Bay favourite Leah Patterson-Baker, gave birth to 7lb 11oz Johnas at Sydney's St George Private Hospital on August 22.
The actress announced the news in the latest issue of New Idea, which has hit shelves today (September 3).
Nicodemou told the magazine: "We're both still learning. He's learning how to be in the world, and I'm learning how to look after him. But it's just so beautiful."
She continued: "It was just instant love. I look at him and go, 'Oh my God, I don't remember my life beforehand - I don't remember being pregnant!' It's like it began from that moment onwards. I'm totally in love."
The 35-year-old had revealed her pregnancy news in February following a course of IVF treatment. She and partner Chrys opted not to learn their baby's sex before the birth.
Nicodemou added: "The best moment for me was hearing that first cry from Johnas. It was just so beautiful, I cried too. We're going to sound like typical parents, but he came out looking so gorgeous, perfect.
"You wonder about that bond when you're pregnant, but you don't really know what the feeling is like until you actually have a baby of your own. I can't believe that he's ours. I'm still in that surreal place."
Home and Away airs weekdays at 1.15pm and 6pm on Channel 5 in the UK, and weekdays at 7pm on Network Seven in Australia.